Radiolaria - Spumellaria - Xiphostylidae

Full reference: E. Pessagno, W. M. Six, and Q. Yang. 1989. The Xiphostylidae Haeckel and Parvivaccidae, n. fam, (Radiolaria) from the North American Jurassic. Micropaleontology 35(3):193-255

Belongs to Tripocyclia according to E. Pessagno et al. 1989

Sister taxa: Tripocyclia crassa, Tripocyclia foremanae, Tripocyclia mascula, Tripocyclia smithi, Tripocyclia southforkensis, Tripocyclia tortuosa, Tripocyclia trigonum

Type specimen: USNM 424152

Ecology: passively mobile planktonic omnivore